<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    :root {
      --bg: #b6d887;
      --green: #009400;
      --red: #e70001;
      --seeds: #4f2500;
    }

    body {
      background-color: var(--bg);
    }

    .watermelon {
      position: absolute;
      width: 500px;
      height: 500px;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      margin: auto;
    }

    .slice-a {
      position: absolute;
      width: 200px;
      height: 100px;
      top: 40%;
      left: 30%;
      border-radius: 50%;
      transform: rotate(45deg);
      background-color: var(--red);
    }

    .slice-a:after {
      content: "";
      position: absolute;
      height: 100%;
      width: 100%;
      top: -15%;
      border-bottom: 60px solid var(--green);
      border-bottom-right-radius: 100px;
      border-bottom-left-radius: 100px;
    }

    .seed-a,
    .seed-b,
    .seed-c,
    .seed-d,
    .seed-e {
      height: 10px;
      width: 10px;
      border-bottom-right-radius: 100px;
      border-top-left-radius: 100px;
      background-color: var(--seeds);
    }

    .seed-a {
      position: absolute;
      top: 40%;
      left: 45%;
    }

    .seed-b {
      position: absolute;
      top: 40%;
      left: 50%;
    }

    .seed-c {
      position: absolute;
      top: 45%;
      left: 45%;
    }

    .seed-d {
      position: absolute;
      top: 35%;
      left: 40%;
    }

    .seed-e {
      position: absolute;
      top: 45%;
      left: 40%;
    }

    .slice-b {
      position: absolute;
      height: 100px;
      width: 200px;
      top: 40%;
      left: 30%;
      border-radius: 50%;
      transform: rotate(-130deg);
      background-color: var(--green);
      animation: slice 5s ease-in-out infinite;
    }

    .slice-b:after {
      content: "";
      position: absolute;
      height: 100%;
      width: 100%;
      top: -15%;
      border-bottom: 60px solid var(--green);
      border-bottom-right-radius: 100px;
      border-bottom-left-radius: 100px;
    }

    @keyframes slice {
      from {
        top: 40%;
        left: 30%;
      }

      to {
        top: 50%;
        left: 45%;
      }
    }
  </style>
</head>

<body>
  <div class="watermelon">
    <div class="slice-a"></div>
    <div class="seed-a"></div>
    <div class="seed-b"></div>
    <div class="seed-c"></div>
    <div class="seed-d"></div>
    <div class="seed-e"></div>
    <div class="slice-b"></div>
  </div>
</body>

</html>